Disk cutting and boring machine.



No. 681,294. 7 Pater lied Aug. 27, mm. H. BLISS.

DISK CUTTlNG AND BORING MACHINE.

(Application filed July 14, 1900.) (No Model.) 4 Sheets'-Sheat m: mallsFEYENS c0, rnorovuma. wxsmmromvm c;

N0. 68I,294. Patented Aug. 27, I90I.

. H. BLISS.

DISK CUTTING AND BORING MACHINE.

, (Application filed. July 14, 1900.) I (No Model.) 4 Sheets-Sheet 2.

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No. es|,294. Patented Aug. 27, mm. H. Bus-s.

DISK CUTTING AND BDRING MAGHINR (Application filed July 14, 1900.)

4 Sheets-Shoat 3- (No Model.)

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No. 68l,294. Patented Aug. 27, mm.

H. BLISS.

DISK CUTTING AND BOBlNG MACHINE.

(Application filed July 14, 1900.) (No Model.) 4 Sheets-Sheet 4.

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NITED STATES "PATENT FFICE.

DISK CUTTING AND BORING- MACHINE.

SPEGIFZCATIbN forming part of Letters Patent No. 681 ,294, dated August27, 1901.

Application filed July 14, 1900- Serial No. 23,579. (No model.)

To all whom it may concern.-

Be it known that I, HERBERT BLISS, of Sheboygan, in the county ofSheboygan and State of Wisconsin, have invented a new and usefulImprovement in Disk Cutting and Boring Machines, of which the followingis a description, reference being had to the accompanying drawings,which are a part of this specification.

The object of my invention is to provide an improved machine for cuttingout disks from boards, laminated material, &c., especially heads or endsfor barrels, tubs, spools, boxes, 850., and for boring such diskscentrally when desired.

The invention consists of the machine and its parts and combinations ofparts, as herein described and claimed, or the equivalents thereof.

In the drawings, Figure 1 is an elevation of the improved machine at thefront. Fig. 2 is an elevation of the same machine at the rear. Fig. 3 isa top plan view of the machine. Fig. 4 is an elevation of the machine atthe end at the right in Fig. 1, the band-pulley being omitted and itsarbor being shown in cross-section. Fig. 5 is a longitudinal sectionvertically of mechanism above the bed of the "frame, the section-beingon a plane through the circular-cutting saws. Fig. 6 is a sectionthrough the circular-cutting saw and related parts, the members of theconstruction being shown in enlarged form and in other positions thanthose shown in Fig. 5 of the same parts. Fig. 7 is a transverse sectionof the construction on line 7 7 of Fig. 6. Fig. 8 is a transversesection on line 8 8 of Fig. 2 looking toward the right. Fig. 9 is atransverse section of the construction shown in Fig. 8, on line 9 9thereof. Fig. 10 illustrates a bored disk as produced by this machinefrom laminated material, one layer of the material being broken away toexhibit the construction. Fig. 11 is a cross-section of a bored disk oflaminated material. Figs. 12 and 13 show a modified form ofconstruction.

In the drawings, A is a frame provided with a bed B,the frame,includingthe bed and other parts thereof, being of such form and size as adaptsit for supporting the operative mechanism. For cutting out the disksproduced by this machine complementary and oppositely-disposed circularcrown-toothed saws are employed, and these saws are mounted on anddriven by mechanism as follows: A revoluble shaft 1 is mountednon-movably endwise in boxes therefor on standards G on the bed B.Another shaft 2, at a little distance from and in axial line with theshaft 1, is mounted reciprocable endwise in boxes therefor on otherstandards O 0. Each of these shafts 1 and 2 is provided at its end witha flanged clamp 3, loose revolubly on the end of the shaft. The clamp 3is preferably a circular and somewhat dishing member loose on a flangedcollar 4, that turns by screwthread on the contracted screw-threadedterminal portion of the shaft. A packing-ring is placed about the collarbehind the clamp 3 and between it and the annular shoulder formed at theend of the body portion of the shaft. These clamps 3 3 on the ends ofthe two shafts are located opposite each other and are adapted toreceive between them the board or other material from which a disk is tobe cut and clamp it in position while the saws rotate about the clampingmembers, which remain stationary. On each shaft 1 and 2 there is asleeve 6, which, with an annular member 7, secured on the sleeveconveniently by screw-thread, forms a headstock on which the circularcrown-toothed saw Sis placed and to which it is secured adj ustablyendwise and removably by means of bolts 9, the bolts passing throughslots therefor. The sleeves 6 are splined on the shafts by means of keysand the headstocks comprising the sleeves 6. The annular member 7,withthe circular saws 8 thereon, are reciprocable endwise on the shafts. Theshafts 1 and 2 are driven from any convenient source of power and arepreferably driven by means of belts 11 12, running from a powershaftrespectively on the shaft 1 and the shaft 2. These shafts are alsoprovided severally with a boring device, conveniently in the form of abit 13, inserted endwise in an axial socket therefor in the shaft andsecured reciprocably, adjustably, and removably therein bylocking-blocks lat l4, placed in longitudinal slots therefor in theshell of the shaft about the bit and held releasably against the bit bysetscrews 15 15, turning through the sleeves 6 against the blocks. It

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will be understood that when these bits are employed for boring thematerial disks as they are being cut out by the saws the bit is soadjusted and secured in position that its cutting end is substantiallyin the plane of the circular saw and that the bit reciprocates on theshaft and rotates therewith concurrently with the saw.

The head-like clamp3 on the shaft 1, which is non-movable endwise, islocated in a predetermined and desirable plane, and the complementaryclamp 3 on the shaft2 is, by means of the reciprocable capability of theshaft 2, adapted to be held yieldingly at a near distance from the otherclamp and to be withdrawn therefrom by means hereinafter described. Forholding the clamp on the shaft 2 yieldinly to position adjacent to thecomplementary clamp a weight 16, Figs. 2 and 3, is employed, adjustableon a radial arm 17 on a pivot or rock-shaft 18, which is provided withanother radial arm 19, the free end of which bears in a socket thereforagainst the head ofa pin 20,1oosein a socket therefor in the outer endof the shaft 2.

For shifting the head-stocks and the saws 8 toward and from each other,and incidentally for throwing back the clamp on the shaft 2 against theaction of the weight 16, the following mechanism is provided: Ashortarbor 21 is journaled in the frame, which arbor is provided with aband-pulley 22 and a pinion 23. A shaft, Fig. 2, consisting of twomembers .24 24 is journaled in the frame, the member 24 being providedwith a cog-wheel 25, that meshes with the pinion -23. The member 24 isprovided with a terminal fixed sleeve 26, which projects therefrom andreceives in the projection the revolubly loose member 24. Aclutch-collar 2'7, splined on the member 24, is provided with teethadapted to engage releasably crown-teeth on the sleeve 26. A hand-lever28, pivoted medially on the frame, is connected at one extremity by alink 29 to the clutch-collar 27 and is adapted for shifting theclutch-collar into and out of engagement with the sleeve 26. The link 29is furcate at one extremity, and straddles and is pivoted to the collar27. The shaft member 24 is provided with collars 3O 30, each having anannular groove therein, which groove through a portion of its annularcourse is in a plane at a right angle to the shaft and which throughother portions of its course is at oblique angles to that plane, thegroove being carried laterally in its annular course away from and backto that plane, the oblique directions of the courses of the grooves inthe two collars being reversed. Also the collars are so mounted on theshaft that the respective straight and oblique courses are revolubly onea little in advance of the other. Shifting-levers 31 31, pivotedmedially on the frame, ride at one extremity in the grooves in thecollars 30 and 30 and at their other extremities are furcate andstraddle and are pivoted to rings 32 32, loose in annular groovestherefor in the sleeves 6 6. The construction and disposition of theparts is such that as the shaft member 24 is rotated the saws 8 8 willbe shifted toward and from each other, one saw being shifted a little inadvance of the movement of the other saw, toward that other saw, to andslightly past the central line of the space normally between the saws,and will then be moved backward away from that advanced position, andthe other saw will immediately afterward be moved to and slightly pastthe same central line of the space between the two saws and will then bewithdrawn, both saws being held in their withdrawn or rearward positionsbriefly whilethe old material is being removed and new material is beinginserted between them. A collar secured tightly to the shaft 2 behindthe sleeve 6, is engaged by the sleeve (5 as the head-stock is shiftedrearwardlyby the action of the collar 30, and the shaft 2, with theclamp 3 thereon, is also moved rearwardly against the resistance of theweight 16 sufficiently to release the clamp 3 from the material betweenthe clamps 3 3. When the sleeve 6 on the shaft 2 is again moved forwardby the action of the collar 30, the clamp 3 by the action of the weight16 is moved forward and held against the material interposed between theclamps, while the saws are still further advanced for accomplishingtheir work as cutters. In the drawings, Figs. 2 and 5, the clamp ontheshaft 2 is shown as withdrawn rearwardly to the limit of itsmovement, the movement of the clamp being at most only very limitedindeed.

For feeding a board or similarly-formed material into the space betweenthe clamps 3 3 a set of feed-rollers 34 34 is employed. Thesefeed-rollers are disposed in upright position adjacent to, but at oneside of, the clamps 3 3. The roller 34 is journaled in blocks 35 35,mounted slidably on the auxiliary frame 36. They are held adjustablytoward the plane of the other roller by setscrews 37 37, turning in theframe 36 against the blocks. The roller 34 is also journaled in blocks38 38, slidable on the frame 36. These blocks 38 38 are affixed to a bar30, and springs 40 40 are interposed between this bar 39 and disks onthe ends of adjusting-screws 41 41, turning through a member of theauxilary frame 36. By this construction the roller 34 is held yieldinglyup to its work. A rearwardly-extending rod 42, secured at one end to thebar 39, is screw-threaded near its other extremity, and a hand-nut 43,turning thereon, is adapted to adjust aknife-edged collar 44, loose onthe rod 42, toward or from the bar 39. A lever 45, pivoted medially onthe frame 36, is furcate at its free extremity and straddles the rod 42and bears against the knife-edges of the collar 44. The other extremityof the lever 45 is connected byalink 46 to an arm 47 on the hand-lever28. By

means of the screws 41 the tension of the springs can be regulated, andby the hand nut 43 the position of the roller 34 can be adjusted withreference to the adjacent roller, while by means of the lever 45 and thehandlever 28 the roller 34 can be withdrawn from the vicinity of theroller 34 sufficiently far to permit of the ready adjustment of a boardor other material between the rollers.

The journals of the rollers 34 34 are pro vided with spur-toothed gears48 48, whereby the motion of one roller is communicated to the other,causing them to rotate synchronously, but in reverse direction. Thespurteeth are preferably made in double sets and are sufficiently longto permit of the rollers being separated somewhat from each other andstill be in gear one with the other. The roller 34 is provided withpinion 49 on its lower elongated journal, which meshes with a gear-wheelon a shaft 50, Fig. 1. This shaft 50 is mounted in the frame and isprovided with a pinion 5l,meshing with a cog-wheel 52,loose on shaft 24.A ratchet-wheel 53 is integral and concentric with the wheel 52 on shaft24. A disk 54, tight on the shaft 24, is provided with a pawl 55, thatengages releasably the ratchet-wheel 53. The pawl 55is pivoted on thedisk 54, and a spring 56, fixed on the disk, bears against the pawl andholds it yieldingly in engagement with the ratchet-wheel. Also for thepurpose of preventing backlash or lost movement of the ratchet-wheel tothe extent of half the length of a tooth thereon I preferably provide asecondary pawl 57, mounted concentrically with the pawl 55 and in suchmanner as to be released by the tilting of the pawl 55. This secondarypawl 57 is also held to its work by a spring and is adapted to catch atooth on the ratchet-wheel that is not moved sufticiently far to beengaged by the pawl 55. The pawl 57 is in mechanical effect, and may beconsidered, a member of the pawl 55. As it is necessary that thefeed-rollers 34 34 should rotate only at properintervals to feed thematerial between the clamps 3 3 when the saws are not in action, Iprovide means for disconnecting the disk 54 on the shaft 24 activelyfrom the ratchet-wheel 53. For this purpose a mutilated or incompletecircular rim 58 is fixed on the frame concentric with the disk 54 and inthe path of an antifrictionroller 59, mounted on the free end of thepawl 55. The construction and disposition of the parts is such that whenthe roller 59 is in contact with the inner surface of the rim ortravel-way58 the pawl 55 is lifted out of engagement with the teeth ofthe ratchel-wheel 53, thereby permitting the shaft :24. to rotate freelywithout taking the ratchet-wheel 53 and the cog-wheel 52 therewith. Therim or travel-way 58 is provided with a short tangentially-disposedterminal portion 58,adap ted to receive on the inner surface thereof theinitial contact of the bearing-wheel 59 when the pawl 55 is beingrevolved with the disk 54 and by its inclination to carry thebearing-wheel on to the travel-way of the rim,

thereby gradually lifting the pawl from engagement with a tooth on theratchet-wheel. To provide for a greater or less feed of material betweenthe clamps 3 3, so as to adapt the machine for producing larger orsmaller disks, as desired, by the employment of larger or smaller saws 8the rim 58 is advisably constructed of two members,one of which, 58 isadjustable circumferentially on the framesupport, whereby the length ofthe rim circumferentially may be lessened or extended, as desired. Thisadjustable member 58 of the rim is clamped to the frame member D, thatsupports the rim conveniently by means of bolts 60 60, the overturnedheads of which engage the edge of the member 58 and are secured to theframe member D by thumbnuts thereon. A low continuation of the principalrim 58 on the outside and a low rib or flange 61 on the inside, affixedto the frame member D, form a groove adapted to receive the adjustablerim member 58 therein and hold it in place on the frame member.

A support or runway for the material being fed into the machine consistsof the straight fiat member 62, mounted on the rod-like uprights 63 63,which near their lower extremities are screw-threaded and pass through arigid strap 64, fixed on and forming a part of the frame, and theseuprights are provided with adjusting-nuts 65 65, that rest on the strap64. The runway 62 is preferably so adjusted as to be inclined slightlydownwardly from the rollers 34 34 below the clamps 3 3. This permits thematerial to be fed through the rollers at an oblique angle downwardly,thereby causing the material to hug close to the runway 62 by the actionof the rollers. A shield 66 above the saws is provided with a supportingmember 67, that extends upwardly and movably through an arm 68, fixed onthe frame. The member 67 is provided with a number of apertures, throughone of which a pin 69 is inserted removably, which pin rests on theupper surface of the arm and supports the shield adjustably in placeabove the saws.

It will be understood that by releasing the set-screws 15 the bits 13can be removed from the shaft or can be pushed farther into the socketsin the shafts, thereby withdrawing the bits from use. Also it will beunderstood that larger saws can be employed on this machine byunscrewing and thereby removing the members 7 and replacing them on thesleeves 6 with larger annular members or heads, on whichcorrespondingly-larger saws can be secured. Neither is it my purposethat the machine herein described should be restricted to the employmentof circular saws of the specific form shown in the drawings, as othersaws or cutters of forms now in use for analogous purposes may beemployed with myimproved machine without departing from my invention.The disk E (shown in Figs. 10 and 11) illustrates a bored disk oflaminated material produced by this machine.

In some kinds of material there is a liability that the chips cut by thebits 13 will stick in the pods or grooves of the bit and will be drawninto the shaft 1 and clog the bit, preventing free and proper movementof the bit out and in the shaft. To obviate this difficulty, I provide abit-clearing device, (shown in Figs. 12 and 13,) which may be used whennecessary. The bit-clearer consists of a disk 70, of steel, cut outcentrally to fit loosely about the bit 13 and into the pods of the bit,the disk having guards 71 71 extending rearwardly therefrom and fittingloosely in the pods of the bit. This bit-clearer is held in placerevolubly by bearing against the end of the shaft and being held theretoby a collar 4 of slightly-modified form. Fig. 13 is a view of thebit-clearer at its outer end.

WVhat I claim as my invention is 1. In combination, a shaft providedwith a terminal axial socket, a bit adjustable endwise in the socket,clamping-blocks in elongated slots in the shell of the shaft, a sleeveon the shaft, and screws turning through the sleeve against the blocksforcing them against the bit.

2. In combination, a shaft provided with a terminal axial socket, a bitloose in the socket, a sleeve on the shaft,-a crown-toothed cutting,device on the sleeve, and means securing the bit to the sleeve holdingthe sleeve with its cutting device and the bit to coincidentreciprocable movement on the shaft.

3. In combination, a rotatable shaft, a nonmovable clamping memberrotatably loose on the end of the shaft, a bit reciproeable endwise inthe end of the shaft and through theclamping member, a sleevereciprocable endwise on the shaft, a crown-toothed cutting device fixedon the sleeve, and means securing the sleeve and the bit to each otherand to revolution with the shaft and providing for concurrentreciprocation of the saw and the bit past the clamping member.

at. In combination, a rotatable shaft having an annular shoulder and areduced terminal portion, a terminal flanged collar turning byscrew-thread on the reduced portion of the shaft, a radiating clampingmember loose on and about the collar between the flange of the collarand the shoulder of the shaft, and a packing-ring also on and about thecollar and with the clamping member substantially filling the spacebetween the flange of the collar and the shoulder on the shaft holdingthe clamping member to movement with the shaft endwise.

5. In combination a rotatable shaft a bit reciprocable in and rotatablewith the shaft, and a bit-clearer fitted about the bit and entering thepod thereof and secured loosely to the shaft, adapted to clear the podof the bit of chips.

6. The combination of a bit-holding member, a bit provided with spiralpods 0r grooves reciprocable endwise in the bit-holding memher, and abit-clearer secured loosely to the bit-holding member and entering thepod or pods, adapted as the bit is reciprocated to clear the bit ofchips.

' In testimony whereof I aflix my signature in presence of twowitnesses.

HERBERT BLISS.

Witnesses:

PETER JACOBS, OTTO J. TRILLING.

